What are some alternatives?
When comparing SlimFAQ and Intro.js, you can also consider the following products
Dozuki - Dozuki is a web-based tool for creating and distributing step-by-step documentation.
HelpNDoc - What is HelpNDoc ? Easy to use yet powerful help authoring environment which can generate various documentation formats from a single source.
Helppier - Helppier provides tools to create interactive user guides in minutes.
Helpinator - WYSIWYG, single source, multiformat, multilingual help authoring tool with screenshot capture and annotation. CHM, PDF, WebHelp, QtHelp, JavaHelp, OracleHelp, WordPress. 249USD.
Airim - Show personalised FAQs before live chat
FAR HTML - FAR HTML is a collection of help authoring and file utilities.